Of course, there are always exceptions to the rule, and some airlines have their own carry on size policies. For example, Spirit Airlines has a notoriously strict policy, while Southwest Airlines is a bit more lenient. So, be sure to check with your airline before you fly, or you might end up having to pay extra for a bag that's too big.
And then there are the personal items that don't count towards your carry on size limit, like your purse or jacket. These are like the get out of jail free cards of airline travel, and you should totally take advantage of them. Just don't try to sneak a full-sized suitcase onto the plane by calling it a personal item, because, trust me, the airlines are onto that trick.
Southwest Airlines Routes 2026
